Homer Morrison
Self (archive footage) (uncredited)
Col. A.B. Morgan
Mayor Adams
Charles Stewart Calvin
Dr. Munson
The Thief
Prof. Roger Bowden
T.D. Shawnessy
Mr. Beaumont
Warden Bill Keller
Captain Trask
Juror #4
Maj. R.A. Foster
Col. Fuller
Col. James Moore
Major Horvath / Benvenuto
George Allerton
Narrator
Walter Abel
Milo Terkel
Charles Gibson
Gabby Sloan
Harry Archer
Director
Richard Aiken
George Trellis
Walter Abel (uncredited)
Narrator
Howard Clinton
Jack, a Flyer, Opening Narrator
Chaplain
Chris McClelland
Cmdr. Roberts
Danny Reed
Prof. Thornton
B.G. DeSoto
Anthony J. Colder
George Gore
Inspector Hammock
Elliott Thomas
M. Phillips
Dr. George Benedict
Jim Foreman
Gregory Stone
Robert Barnes
Hugh Allison
Nick Ranson
Warren Rogers
Karl
Dan Foster
John Stafford
Phil Talbot
District Attorney
James Trent
Stanley Ashton
Ford Adams
D'Artagnan
Carpenter
